io.github.eason4kim-rocket/looktwice-mcp
Email, EU VAT, IBAN, and domain validation plus evidence-backed U.S. CPSC recall screening.
Open source Open in the app JSON README (API)
About
Email, EU VAT, IBAN, and domain validation plus evidence-backed U.S. CPSC recall screening.
Details
- Kind
- MCP servers
- Topic
- Communication
- Publisher
- eason4kim-rocket
- Origin
- official
- Category
- ferramentas
- Transport
- local
- Version
- 0.1.1
- Last push
- 2026-08-15T06:06:45Z
- Repository state
- ativo
- Language
- TypeScript
- License
- MIT
- Added
- 2026-08-29 03:02:44
- Updated
- 2026-08-29 03:02:44
- Origin id
io.github.eason4kim-rocket/looktwice-mcp
README
# looktwice-mcp
[](https://www.npmjs.com/package/looktwice-mcp)
[](./LICENSE)
[](https://registry.modelcontextprotocol.io/v0/servers?search=looktwice)
MCP (Model Context Protocol) server for the [LookTwice API](https://looktwice.dev). Validate
emails, EU VAT numbers, IBANs, and domains, and screen products against U.S. CPSC recalls and
Product Safety Warnings — directly from Claude Desktop, Cursor, or any MCP client.
```bash
npx -y looktwice-mcp
```
## Setup
1. Create a LookTwice account at [looktwice.dev](https://looktwice.dev/sign-up) — verified
accounts receive 100 free API units each month, no credit card required.
2. Create an API key in the [dashboard](https://looktwice.dev/dashboard).
3. Add the server to your MCP client configuration:
```json
{
"mcpServers": {
"looktwice": {
"command": "npx",
"args": ["-y", "looktwice-mcp"],
"env": {
"LOOKTWICE_API_KEY": "lt_live_..."
}
}
}
}
```
## Tools
| Tool | What it does | Cost |
| ------------------- | --------------------------------------------------------------------------- | ---------- |
| `email_check` | Syntax, MX, disposable, role, free-provider signals (no mailbox probing) | 2 units |
| `vat_check` | Live EU VIES validation with returned business data and request evidence | 1 unit |
| `iban_check` | Country structure, length, and MOD-97 checksum (no account-existence claim) | 1 unit |
| `domain_check` | DNS, MX, TLS, and RDAP state for a registrable domain | Free quota |
| `cpsc_recall_match` | Evidence-backed candidate matching against CPSC recalls and warnings | 3 units |
| `credits_balance` | Current workspace credit balance | Free |
## Compared with a single-purpose MCP
Most VAT or email MCP servers wrap one upstream. This server keeps the same evidence rules across email, VIES, IBAN, domain, and CPSC: timestamps, official sources, and no mailbox / account / safety claims.
## Honest boundaries
- `email_check` never claims a mailbox exists (`mailbox_status: not_checked`).
- `iban_check` never claims an account exists or belongs to a person.
- `cpsc_recall_match` returns screening candidates with official sources, not safety, legality,
or compliance decisions.
## Environment variables
| Variable | Required | Default |
| -------------------- | -------- | --------------------------- |
| `LOOKTWICE_API_KEY` | Yes | — |
| `LOOKTWICE_BASE_URL` | No | `https://api.looktwice.dev` |
## License
MIT